/Engine/Plugins/FX/Niagara/Source/Niagara/Public/NiagaraSystemInstance.h
Poll for previous frame capture requests. Once queried and bool is returned, the results are cleared from this system instance.
bool QueryCaptureResults ( const [FGuid](API\Runtime\Core\Misc\FGuid) & RequestId, [TArray](API\Runtime\Core\Containers\TArray)< [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< struct [FNiagaraScriptDebuggerInfo](API\Plugins\Niagara\FNiagaraScriptDebuggerInfo), ESPMode::ThreadSafe >> & OutCaptureResults )